Wire testing machine



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E. E. 8; I. A. KILMER. WIRE TESTING MACHINE;

No 244,618. Patented. July 19, 1881.

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('N0 Mode1.) I s Sheeizs-Shet3 E. R & I. A. KILMER.

WIRE TESTING MACHINE.

FOL-244,618. Patented July 19,1881.

WITNESS ES v INVE TORS u Perms. MW Mu -n UNITED. "ST T S:

ELMER E. KILMERAND IRVING A.

WIRE-[TESTING MACHINE.

PATENT OFFICE.

SKILMER, or SOHENEOIADY, N. Y.

SPECIFICATION forming part of Letters Patent No. 244,618, dated July 19, 1881.

Application filed March26,1881. (NomodeL) To all whom it may concern Be it known that we, ELMER E. KILMERand IRVING A. KILMER, citizens of the United States, resident at Schenectady, in the county of Schenectady and State of New York, have invented certain new and useful Improvements in Machines for Testing the Strength of Wire; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification. t Y

This invention has relation to wire-testing machines; and it consists in the combination, with holdin g-carriages and independent screws connected respectively therewith, of areactingspring, beveled guideway, and spring-balance, a shifting-lever and spring-finger, shiftingslides, power-shaft, and connections, and a spring dog, ratchet sleeve, and weight and cord; also, in the combination, with a springbalance and the screws and carriages, of the threaded sleeve, indicator-rod, its shoulder and I block, and the-weight and cord; and, also, in the combination, with the spring balance, screws, and carriages, the power-shaft, pulleys, and gearing, of the reacting-spring, slideway, and the automatic shifting-slides; and, finally, in the combination, with the spring-balance and pulling devices, of the power-shaft andconnections and the automatic stopping and re-- versing devices, substantially as hereinafter shown and described. 1 V

Figure 1 is a representation of a side view. Fig. 2 is a plan view. Figs. 3, 4:, 5,6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20 are detail views.

In the accompanying drawings, the letter A designates the frame-work of the machine, constructed in any suitable manner to receive the various working parts. Y

B B represent carriages, moving between guideways and provided with jaws c 0', which are designed to hold the wire to be tested. D is a screw, which slides loosely through bearings Z l, the front end of the screw being provided with a spiral spring, j, which serves to said screw. 1

0 represents a shaft journaled in the bearings b b and carrying the gear-wheels d d,

a which are rigidly keyed to said shaft by means of set-screws. Engagingthe wheel of said shaft is a cog-wheel, a, which is provided with a thread to suit the screw D, so that when the cog-wheel a is turned in one direction said screw and carriage B will be moved outward,

screw and carriage will be moved back again. To keep the screw D from turning it is pro- I vided with a spline which engages with a keying for this cog-wheel, and provided with an internal thread to engage the screw D. The

cog-wheel E is provided on itsface with a spring or click or dog, g, which engages with a ratchet, g, on the sleeve.- y

H represents a weight which is attached to a cord, 6, which is'wound around the sleeve as'shown in the drawin s. 1

,On the dog 9 is arranged a spur, h, which projects toward the middle portion of the machine, and the screw D is provided with a beveled collar or bead, h, the beveled face of which is on the side toward the cog-wheel E, so that when the collar h is in contact with the wheel the dog y will be kept away from the ratchet g, and the cog-wheel E can turn loosely on the sleeve f in either direction.

On the shaft 0 are secured two belt-pulleys, a a, which are designed to run in opposite directions, but not at the same time. The pulley at is designed to rotate the shaft, so as to carry the screw D outward when the wire is being tested, and the pulley n to carry the screw back to its starting-point. On said shaft 0 are also placed two loose pulleys, q q, to which the driving-belts are to be shifted for stopping the machine automatically by means keep the carriage B against the shoulder 10 of .60 and when turned in the opposite direction said end of this slide 7: extends downward in the form of an arm, k.

G is a treadle attached to a cross-piece, I, which is pivoted to the frame-work, and provided at its end with a hook or shoulder, i, which is designed, when the treadle is depressed, to bear against the arm k of the slide 7e, and move the latter so as to shift the driving-belt from the loose pulley q to the fast pulley n, setting the screw D in motion.

In bearings j j is arranged a slide, 1', which is rigidly attached to the slide 7:.

The under side of the carriage B is provided with a bar, 0, which is pivoted to the carriage. This bar or lever c is provided at one end with a pivoted arm or bar, '0, which is also pivoted to the end of the screw D. At its other end the bar or lever 0 is provided with a pivoted finger, c which is provided with a stop, so that it can turn inward, but not outward beyord the line of direction of the arm of the lever e, to which it is pivoted. This finger is designed to be kept in the line of direction of said arm by means of a spring, 1'.

Connected to the slide 70 is a slide, m, which is provided with a fork, m, and is designed for use in shifting the second belt (which runs in the opposite direction to that of the first belt) from the loose pulley q to the fast pulley a, and from the latter to the former, this operation being effected in both cases automatically,

as hereinafter explained.

F represents a spring-balance having a dial and indicator, and designed to show the degree of strain upon the screw D, to one end of which the mechanism of the balance is attached according to any form of construction in use. To the other end of the screw D the carriage B is attached.

The wire to be tested having been placed in the jaws c c of the carriages, and both belts of the machine being on the loose pulleys, the treadlc Gis depressed, and, through the means above described, the first belt is guided from the loose pulley g to the fast pulley n, thereby starting the movement of the shaft 0 and its cog-wheels, and turning the gear a in such a direction as to carry the screw D outward or away from the spring-balance, and pulling the carriage B away from the carriage B, so as to bring a strain upon the wire. At the same time the carriage B is moved toward the end of screw D insuch a manner as to move the lever e which carries the finger c, and said finger is turned inward sufiiciently to allow the ratchet-slide i to move in either direction without engagement with said finger, and under the strain of the wire both carriages B and B are moved away from the spring-balance, and the latter carriage, B, being rigidly attached to the screw D, as soon as said car- 'riage is moved the collar h is pulled away from the cog-wheel E, allowing the dog 9 to descend to the ratchet g. The wheel E moves at this time in such direction as not to do any work, and the sleeve f, on which the cord is wound, is caused to turn by the weight H, which overcomes the friction of this sleeve on the screw D, allowing the carriage B to move,

the screw D working in the sleeve. After the break occurs, and the device is reversed, the wheel E, running in the opposite direction, engages by its pawl the sleeve f, winding up the weight and retracting the carriage B.

The slide m, whereby the second belt is shifted, is provided with two bands, to 10, which embrace the slide loosely, so that the slide m can have motion with reference to the slide k. Each of these bands is provided with a key-seat, 'r, to engage a spline, t, on the slide it, which is provided, also, with ashoulder or stop, 0. This arrangement is designed so that when the slide 70 is moved to start the machine its motion is sufficient to bring the bands 10 w of the slide at to the round portions of the slide 70, or between the spline and shoulder 1*. N ow, as the slide at has an overhanging arm, a, which rests on the beveled guideway s of the carriage B, and .as this carriage moves away from the carriage B when the machine is started, the arm a is allowed to drop and the bands 20 w to turn on the slide k, in which position the slides m and k are connected, so that one cannot move without the other; and when thewire being tested breaks, the carriage B is by the action of the spring f thrown back against the shoulder 19 of the screw D, and the lever c and finger c are moved around, so that the inner side of the end of the finger comes into engagement with the ratchet of the slide 0', and being held in an extended position, as already described, moves said slide 2', and with it the slides on and k, far enough to shift the main drivingbelt from the fast pulley n to the loose pulley q, and the second or reversing belt, which runs in the contrary direction, from the loose pulley q to the fast pulley n, whereby the movement of the shaft 0 is first stopped and then reversed. As soon as said shaft is reversed the dog 9 engages with the ratchet g, the cogwheel E is brought into positive action, and the sleeve f is turned on the thread of the screw D to let the carriage B come back to its position from which it started when the wire was first placed in the holding-jaws. As the beveled side of the hub h is brought against the cog-wheel E it raises the dog 9 up from the ratchet, so that said wheel can revolve without turning the sleeve f. When the movement of the shaft 0 is reversed the carriage B is also run back to its first position, and in its passage, by means of its beveled guideway s, raises the arm a of the slide m, turning the latter sufiiciently to allow the keyseats of the bands w w to slide on the splines t t, permitting the slide 70 to move longitudinally without moving the slide m. As soon as the carriage B is moved enough to bring its shoulder s in contact with the arm a the slide m is moved and shifts the belt from the fast pulley n to the loose pulley q, thereby stopping the movement of the machine, as both belts are now on the loose pulleys. The machine is now ready for testing another wire.

It is apparent that in the operation of this machine, by as much farther as the carriage B is moved away from the balance F than the carriage B has been moved before it'has been forced against the shoulder p by the spring f,-so much is the wire stretched. This is indicated by the rod 1), which extends from the carriage B through a bearing on the carriage B. The rod is provided with a shoulder, y, and a loose indicator-block, m, and as the carriages are pulled away from each other the shoulder y on the rod 1) moves the block 00 with the rod; but when the machineis reversed and run back the block as is left at a point distant from its first position, showing how much the wire has been stretched. So, also, in regard to the indicator-hand y of the spring-balance. A telltale hand, 02, is placed over the main hand, and is provided with an offset or spur, m whereby it is carried around with the main hand; but when the carriage B is movediback, and the spring-balance with the hand 3 returns to the first position, the tell-tale hand 00 is left at the point of farthest departure, indicating the number of pounds sustained by the wire immediately before breaking. These tellholding-carriages,

tale indicators 00 and w obviate the necessity of constant watchfulness on the part of the attendant.

Should it be found advisable at any time to run-this machine by hand, this may be efl'ected by loosening the set-screws in the cog-wheels d d, moving said cog-wheels inward and substituting the hand-wheel S, which has a thread to fitthe screw D for the cog-wheel a, and the hand-wheel It for the wheelE and sleeve f Having described this invention, what we claim, and desire to secure by Letters Patent, 1s- 1. The combination, with the wire-holding carriages B B, the screws D D, the spring f, inclined guideway s, and spring-balance, of the shifting-lever e, spring-finger v, connection c, the slides 70, i, and m, the power-shaft, pulleys, gearing, the spring dog g, ratchetsleeve f, and weight and cord, substantially as specified.

2. In a wire-testing machine, the combination, with spring-balance, holding-carriages B B, and screws D D, indicator-rod p, shoulder y, and tell-tale block so, and weight and cord, substantially as specified.

3. In a wiretesting machine, the combination, with the spring-balance, screws DD, and

and the power-shaft, pulleys, and gearing, of the spring f, the beveled slideway s, and the automatic shifting-slides, substantially as specified.

4. In a wire-testing machine, the combination, with the spring-balance and pulling devices, of the power-shaft and connections, and

of the threaded sleeve f automatic stopping and reversing devices, substantially as specified.

In testimony whereof we affix our signatures in presence of two witnesses.

ELMER E. KILMER;

V IRVING A. KILMER. Witnesses:

'- SIMON SOHAPFLITCH,

FRANK SEYMOUR. 

